scapegoat
cortex-a
| scapegoat | cortex-a | |
|---|---|---|
| 5 | 2 | |
| 239 | 122 | |
| - | - | |
| 0.0 | 7.4 | |
| about 2 years ago | over 1 year ago | |
| Rust | Rust | |
| MIT License | Apache License 2.0 |
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scapegoat
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10-12x smaller executable footprint than `std::collections::BTreeMap` - accurate?
Woah that made a huge difference! Thanks for taking the time to try that out and type it up. Was able to retrace your steps and get the same 8.4KB result. I've updated the writeup again.
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no_std dups
IndexMax is not used directly and the one that is used directly is dynamic. https://github.com/tnballo/scapegoat is closer, but, still does not take advantage of const (uses rebalancing)
cortex-a
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Liblithium: A lightweight and portable cryptography library
I'm latching onto a non-main argument to be pedantic, but I'd like to mention that Rust is fine for _non-embedded_ kernel development too, in my experience.
As you're likely aware, Rust for embedded sucks when there's no HAL, but should be very pleasant otherwise. Have you looked into the cortex-a[1] crate?
Some unnecessary instructions could also be a part of an ongoing optimization effort[2][3].
[1]: https://github.com/rust-embedded/cortex-a
[2]: https://old.reddit.com/r/rust/comments/yn6105/optimization_o...
[3]: https://arewestackefficientyet.com
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Rust OS cortex a5
It looks like you can. I have no experience with this but you can also check out the rust channel of the embedded engineers discord for help if you hit a snag.
What are some alternatives?
heapless - Heapless, `static` friendly data structures
cortex-m-quickstart - Template to develop bare metal applications for Cortex-M microcontrollers
min-sized-rust - 🦀 How to minimize Rust binary size 📦
cortex-m - Low level access to Cortex-M processors
bst-rs - Recursive & Iterative Binary Search Tree Implementations within Rust
liblithium - A lightweight and portable cryptography library.
xargo - The sysroot manager that lets you build and customize `std`
syscall.rs - Raw system calls for Rust
option-block - A minimal utility Rust crate for small, fixed-size blocks of optional types.
cortex-m-rt - Minimal startup / runtime for Cortex-M microcontrollers